Flow sensor



FIG. 1 is a perspective view of a flow sensor showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left end elevational view thereof;

FIG. 6 is a right end elevational view thereof.

The rear elevational view is a mirror image of the front elevational view. 

The ornamental design for a flow sensor, substantially as shown and described. 